General relativistic geodesic integration and ray-tracing

 Gyoto aims at providing a framework for computing orbits and
 ray-traced images in General relativity. It consists in a shared
 library (this package), utility programs (in the gyoto package), and
 a plug-in for the Yorick and Python 2 and 3 programing languages (in
 yorick-gyoto, python-gyoto and python3-gyoto respectively). Gyoto can
 be extended with plug-ins (see libgyoto4-dev).
 .
 MPI parallelization requires the gyoto and mpi-default-bin packages.